| Most common failures | No# failures |
|---|
| Registration plate issues | 5 |
| Horn not working |1.7.3a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim out of alignment | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Wheel hub excessively worn |5.2.1 |b| |i|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Upper Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Upper Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Upper Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Suspension arm attachment bracket/mounting insecure swinging arm lose |5.3.3 |a| |i|| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment Rear brake actuating lever not returning, Repaired at station. (1.1.15 (f)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |